Telemetric receiver



Dec. 18, 1934.

K. WILDE TELEMETRI C REC EI VER Original Filed Oct. 22, 1927 3Sheets-Sheet 1 h 82 Illlllilllllur'f' Wilde Afi'orneys.

K. WILDE TELEME'IRIC RECEIVER Dec. 13, 1934.

Origihal F iled Oct. 22. 1927 a Sheets-Shee t 2 .7: van for K017 Wilde ya921, rm aWW'O/nery;

Dec. V18, 1934. K. WILDE- TELEMETRICYRECEIVER 3 Sheets-Sheet 3 IJnpenfor K01? 1749 Patented Dec. 13, 1934 UNITED STATES vLiliana)'rum'rarc m flan Ootober 2:, 1921, serial No.

Original applies 227.033. new Patent No. l 1981. Divided and this im. In

,szaess. September 0, application m :1,

1m. Serial No. 848.002, renewed Iblmlary 0.

Germany "Claim.

indications of a measuring instrument or thelike, of the kind in which.a pointer or the like in the receiver is set periodically incorrespondence with a pointer or the like in the transmitter by means ofcontact operations. which are made in the transmitter and act upon thereceiver.

According to my present invention, for each transmission of a value tobe measured, a member which shifts the pointer or the like is driven atthe receiver, at a predetermined speed from a constant starting point bya mechanism operated by successive current modifications received over atransmitting line for putting said mechanism into and out of action.

Further features of the invention will appear from the followingdescription and the accompanying drawings.

In the accompanying drawings Fig. 1 shows diagrammatically one form ofthe new receiver. Fig. 2 shows a detail. Figs. 3 and 4 show a practicalembodiment of the receiver with furth- -er details of the invention.

At the receiving station (Fig. 1) for example a high frequency receivingequipment HfE of any known kind responds to a high frequency currentsent from the distant transmitting station over the lines La, Lb.Thereby the relay R3 is excited as long as current flows over the line.Relay R3 closes contact 6 and opens contacts 7 and 8. Contact 6 puts incircuit the magnetic clutch K1, thereby coupling crank arm c with shaftd which is constantly rotated in the direction of the arrow by motor M2.The end of arm e moves in a slot 1 in disc h and starts from contact gwhich corresponds with a contact of the transmitter. If it encountersthe pointer 3 during its movement, it carries the pointer withitsofarasitgoes,thatistosaysolongasrelay R3 is excited. The pointer S isdouble cranked so that its end may move over a scale on the front of thereceiver casing. The distance oi pointer S from the point 0 correspondswith the distance of the pointer in the transmitter from its zeroposition. In other words, the two pointers have the sameposition ontheir respective scales.

Upon the de-energization' of relay R3, clutch K1 is uncoupled, and thecircuit of clutch K2 completed at contact 7 over contact 11 of relayOctober :8. 1m

R4. Clutch K2 connects the arm 1, normallyheldbyspringmattheendiofslotiwith shaft t which is driven in theopposite direction to shaft d. Ann 1' is thereupon turned from i to a,meeting arm e on its way and taking it along to a, while the balancedpointer 8 remains where it is. As soon as arm 1- reaches contact a thecircuit of relay R4 is closed, the relay is excited and completes atcontact 10 a holding circuitfor itself over contacts 7, 8 of relay R3,and breaks at contact 11 the circuit of clutch K2, thus freeing arm 1'and permitting it to be returned by spring 1n to its position of rest1'. The apparatus is then ready for the next transmission. and untilthat occurs relay R4 remains excited. It is de-energized when relay R3,excited afresh over the lines La, opens contacts I and 8. v

It will sometimes occur that arm e will come to a stand-still before itreaches pointer S, the preceding deflection having been greater. Meansare then required to returnpointer 'S to the position at which arm estops. For this purpose the end of arm 1 is fitted with a movable fingerwhich strikes pointer B and carries it along to arm c. At the instantarm 1- touches arm e, the resistance of the latter puts thefinger out ofaction, so that the pointer S is freed and stands still, while the twoarms 1' and e move on to a.

In the example of the invention so far described and illustrated thepointer S in the receiver is designed to correspond exactly with thepointer in the transmitter. Thus the deflections of the receiver pointerS are always exactly equal to those of the transmitter pointer. Thenecessary proportionality of the two deflections may however be obtainedthough the receiver deflections be made larger or lever 11 engaging it.Bell crank lever 11 is pivotedat I and acted on by spring 10. whenfinger p engages the projection a: on pointer S the latter is carriedalong until the radial arm of bell crank lever 11 strikes against am e.As arm r continues moving the resistance of arm e suffices to turn bellcrank lever 11 so that it rep, being held in a slanting position byspringv s, passes projection a: on pointer 8 without touching it, sothat the pointer is not moved. When arm 1' strikes abutment q finger ,pis

pressed behind the book a again; and is ready.

once more to carry along the pointer to the position of arm e.

A practical embodiment of the new receiver is illustrated in Figs. 3 and4. The high fre'- quency current received over line L actua'tes a highfrequency equipment HIE causing relay R6 to be energized as long as thecurrent flows. At contact 11 relay R6 completes the circuit of amagnetic clutch Kl (Fig. 4) which couples the rotating shaft d with thegear wheel Y1 loose upon it. Shaft d is continuously rotated in thedirection of the arrow in Fig. 3 by an electric, motor M02; fitted witha braking governor R92, through the worm gear S112, 812 and the gearwheel I, brushes upon the slip rings 1'! conveying current to therotating electromagnet of the clutch.

A gear wheel VII connected with gear wheel VI meshes with a pinion VIIIwhich has a hub 13 rotating on spindle 14 and carries an arm e whichtherefore is revolved in the direction of the arrow in Fig. 3. Anotherclutch K2 (Fig. 3) also driven by the motor M02 through gearing I, II,but in the opposite direction to clutch Kl, couples shaft t (which ishidden in Fig. 4) to a gear wheel III upon it, meshing with-gear wheelIV which rotates on shaft 15 and carries arm 1'. Slip rings 16 conveycurrent to the clutch K2 while rotating, from contact 9 of relay R5 andcontact 12 of relay R6.

. Arm e serves to shift the pointer S forward, arm 1' to shift itbackward, these arms acting on a rod S1 upon the spindle 14 of thepointer S. The pointer S is freely movable and stays in the position inwhich it is set by the arms e and 1' until shifted. Normally arm e reststo the left against an abutment qi and arm 1 to the right aga'cnst anabutment q. In the position of rest, the arm e holds contact a closed.

The receiver works as follows:-

The high frequency current over line L keeps relay R6 excited as long asit lasts. For the same period of time the circuit of clutch K1 is closedat contact .11, and arm e is rotated I away from the abutment ql,clockwise in Fig.

3. If in its movement arm e encounters rod 81 it carries the pointer Sforward. When it comes to a standstill the pointer S corresponds .withthe pointer of the transmitter. Arm e is brought to a standstill byrelay R6 opening contact 11 and throwing out the clutch K1. For themoment both arm e and pointer 8 remain where they are.

Upon opening contact 11 relay R6 also closes contact 12 and puts clutchK2 in circuit over contact 9 of relay R5. Shaft t is therefore rotatedand arm r-moves anticlockwise from the abutment q. As soon as itencounters arm e it carries it a1ong,.while rod S1 and pointer S remainstationary. If arm e in its movement did not reach pointer S on accountof its already having a larger deflection. arm 1- in its anticlockwisemovement first meets rod S1 and carries it and the pointer 8 along untilit meets arm c. It then leaves pointer S standing and carries along onlyarm e as far as abutment ql. Here arm e closes contact a and excitesrelay R5 which .opens contact 9 and so puts clutch K2 out of a'ctioni 1being no longer driven returns under the actionof a spring (not shown)to its initial position against abutment q leaving rod 81 and pointer Sunaffected. At

" contact 10 relay R5 completes a holding circuit for itself overcontact 12 of relay R6 and therefore remains energized until the nextexcitation of relay R6, that isuntil the next transmission. Clutch K2 isout of action until then and continues out of action on account ofcontact 12 being open until arm c has done its work and set the pointer8.

As shown in Fig. 4 gearing XIV. XV connects shaft d with .a counter ZWwhen the shaft is shifted to the right to drive arm e. The counter isdriven so long as arm e is driven by the shaft d. The total movement ofthe counter is therefore proportional to the product of the pointerdeflection and the time it lasts. Hence the counter reading is ameasure, say, of the watthours delivered if the measuring instrument atthe sending end is a wattmeter, or if it is an ammeter', the voltagebeing constant. counter to read watt-hours the gear between it and themotor M02 must be suitably designed to take into account. for example,the value of a unit deflection of the pointer in terms of watts oramperes.

K, TR, T in Fig. 3 are means for instantly adjusting the voltage of themains L2 when pointer S departs considerably from its usual settings. Inthis case it is assumed that the transmitting measuring instrument is avoltmeter. Adjustable contacts k1, 102 are arranged on the scale Sk2 oneach side of the normal position of the pointer so that the pointertouches one or other of them if its deflection is sufliciently a1-.tered from normal. The spindle of the pointer S is connected to one poleof a battery, and on encountering contact k1 or k2 the pointer completesthe circuit of magnetic clutch K through which motor M02 drives the beltTR in one direction or the other. By means of this belt drive aregulating transformer T connected at n1, n2 to an alternating currentsource is so governed as to increase or diminish the voltage of themains.

I claim:

For the 1. A remote controlled indicator comprising a movable indicatingelement adapted to remain where it is set, a member having an activemovement for shifting said element in one direction, mechanism fordriving said member at a predetermined speed from a constant startingpoint,-

operative relation to said element, and for subse-' quently returningthe shifting member to its initial position.

2. A remote controlled indicator comprising an indicating element, anarm adapted to en-v gage said element, means controlled by received saidcurrent modifications, a sec.- movable to engage said element andindicating element, two rotatable arms normally to return thelattertovits initial posi-' positioned at, opposite sides of the elementand adapted to engage said element from opposite I directions, aconstantly rotating driving means, a clutch controlled by receivedcurrent modifications for connecting one of said arms to said drivingmeans for a limited time to rotate such arm from its initialposition-through an angle determined by the interval between suchcurrent modifications, a second clutch operative on the conclusion ofthe movement of the first arm determined by the last currentmodification for connecting the second arm to said driving means throughreverse gearing, whereby the second arm is rotated in a directionopposite to that oi the first arm, said second arm operating to movesaid element against the firstarm when the latter has stopped short ofthe element, and means for returning the second arm to its ini- 4. In aremote controlled indicator the combination withan indicating element,or a movable arm adapted to engage said element on reaching it anddefiect the same, means controlled by receiving current modificationsfor causing rotation of said arm from its initial position through anangle determined by the interval between such current modifications, asecond arm movable to engage said first arm and to return the latter toits initial position, a finger on said second arm normally lying in thepath of said element and operative to move said element against thefirst arm when the latter has stopped short oi the element, said fingerbeing rendered inoperative on engagement of the second arm with thefirst, means for moving said second arm in the opposite directionto themovement of the first arm upon the conclusion of such movement, andmeans for returning said second arm to its initial position.

5. Remote controlled indicating apparatus responsive to successivecurrent modifications and indicating means movable by said movable meansfrom a position indicating a previous value directly to a positionindicating new value transmitted.

6. Remote controlled indicating apparatus responsive to successivecurrent modifications spaced by a time interval corresponding to thevalue to be transmitted, said indicating apparatus comprising drivingmeans operable at a con- .stant speed, means movable from a definiteposition, means controlled by said successive current modifications forcausing said driving means to actuate said movable means through anextent determined by the interval between said'current modifications.means for returning said movable means to said definite positionsubsequent to the last of said current modifications,

and means for indicating the position of said movable means at the endof said interval, said indicating means being arranged to remain in saidindicating position during the return of said movable means to saiddefinite position.

'1. In a telemetric receiver cyclically responsive to signalscorresponding to a quantity, positioning means responsive to cyclicallytransmitted values oi ,said'quantity, indicating 'means posi-' tionedthereby and arranged to remain at the last transmitted value .01 saidquantity, said positioning means comprising means operating.

from a definite position in each cycle for an extent corresponding tothe time duration of the values of said quantity, indicating meanspositioned thereby and arranged to remain at the last transmitted valueof said quantity, said positioning means comprising means operating froma definite position in each cycle for an extent corresponding to thetime duration of the .signal and co-operating with said indicating meansfor shifting the latter in onedirection,

and means for shifting said indicating means in the opposite direction.

9. In a telemetric receiver cyclically responsive to signalscorresponding to a quantity, positioning means responsive to cyclicallytransmitted said directions respectively.

10. Remote controlled indicating apparatus responsive to successivecurrent modifications in a telemetering circuit spaced by a timeinterval corresponding to the value to be transmitted, said indicatingapparatus comprising driving means operable at a constant speed from apower source other than said circuit, means movable i'rom an initialposition, means controlled by said successive current modifications insaid circuit for causing said driving means to actuate said movablemeans through an extent determined by the interval between said currentmodifications, and means responsive to said current modifications insaid circuit for returning said movable means to its initial positionsof time durations proportional to successive values of a quantity, saidreceiver comprising a motor rotatable at substantially constant speed,and an element operated thereby for time durations corresponding to saidsignals for integrating said quantity values.

12. In a telemetric receiver cyclically responsive to signalscorresponding to a quantity, positioning means responsive to cyclicallytransmitted values of said quantity, indicating means positioned therebyto continuously indicate said l1. A telemetricreceiver responsive tosignals as I for an extent corresponding to the time duration thesignal. 1

responsive to successive current modifications in a telemetering circuitspaced by a time interval corresponding to the value. to, betransmitted, said indicating apparatus comprising means responsive tosaid current modifications and movable at constant speed from an initialposition through an extent determined by the interval between saidmodifications, and means responsivs to said current modifications insaid circuit for returning said movable means to its means.

15'. Remote controlled indicating apparatus of the type wherein anindicator is moved from aposition indicating a previous value directlyto a position indicating the new value transmitted, said apparatuscomprising means responsive to successive current modifications spacedby a time interval corresponding to a value and movable through anextent corresponding with said time duration, and means for returningthe firstmentioned means to an initial position.

16. In a telemetric receiver, an indicating element adapted to operateover a predetermined range; electro-responsive-means cyclicallyoperative to position said element, and limit-switch means adapted tocooperate with said electroresponsive means at one end of the range ofsaid indicating means for 'causing said electroresponsive means to berestored to a position at the other end of said range.

same

values. said positioning means means operating from a fixed position ineach cycle 17. Remote controlled indicating apparatus cyclicallyresponsive to current modifications tor a time interval correspondingtothe value to be transmitted, said indicating apparatus compris- 13.Remote controlled indicating apparat ing a substantiallysynchronous'motor operable at substantially constant speed. and meansmovable thereby irom its position at the beginning of said interval fora distance corresponding therewith.

18. Remote controlled telemetric receiving apparatus adapted to respondcyclically to current modifications spaced by a time interval in eachcycle corresponding to the value to be transmitted. said apparatuscomprising an electric motor rotatable at substantially constant speedfrom a source of electrical power supply. and means cyclically movableby said motor from its position at the beginning of said interval ineach cycle for a distance corresponding with said interval, said powersupply source furnishing power to said motor concurrently with theoperation or said movable means.

19. A telemetric receiver comprising an electric motor operable atsubstantially constant speed from an electrical supply source, meansmovable by said motor, and'means responsive to current modificationsfrom another electrical supply source for causing operation of thefirstmentioned means by said motor for a distance corresponding to thetime duration between said 3 current modifications.

20. In a telemetric receiver cyclically respon- I KURT wmnn.

Disclaimer 1,985,130J-Kurt W'ihie, Berlin-Wilmersdorf, German TELEMETBIGRncmvm'n. Patent dated Dec. 18, 1934. Disclaimer filed Ju y 19, 1949, bythe assignee,

Builders Iron Foundry.

Hereby enters disclaimer to claims 5 to inclusive, and claims 17, 18,19,-

and of said patent.

{Ofiicial Gazette Aug. 28, 1949.]

for an extent corresponding to the time duration the signal. 1

responsive to successive current modifications in a telemetering circuitspaced by a time interval corresponding to the value. to, betransmitted, said indicating apparatus comprising means responsive tosaid current modifications and movable at constant speed from an initialposition through an extent determined by the interval between saidmodifications, and means responsivs to said current modifications insaid circuit for returning said movable means to its means.

15'. Remote controlled indicating apparatus of the type wherein anindicator is moved from aposition indicating a previous value directlyto a position indicating the new value transmitted, said apparatuscomprising means responsive to successive current modifications spacedby a time interval corresponding to a value and movable through anextent corresponding with said time duration, and means for returningthe firstmentioned means to an initial position.

16. In a telemetric receiver, an indicating element adapted to operateover a predetermined range; electro-responsive-means cyclicallyoperative to position said element, and limit-switch means adapted tocooperate with said electroresponsive means at one end of the range ofsaid indicating means for 'causing said electroresponsive means to berestored to a position at the other end of said range.

same

values. said positioning means means operating from a fixed position ineach cycle 17. Remote controlled indicating apparatus cyclicallyresponsive to current modifications tor a time interval correspondingtothe value to be transmitted, said indicating apparatus compris- 13.Remote controlled indicating apparat ing a substantiallysynchronous'motor operable at substantially constant speed. and meansmovable thereby irom its position at the beginning of said interval fora distance corresponding therewith.

18. Remote controlled telemetric receiving apparatus adapted to respondcyclically to current modifications spaced by a time interval in eachcycle corresponding to the value to be transmitted. said apparatuscomprising an electric motor rotatable at substantially constant speedfrom a source of electrical power supply. and means cyclically movableby said motor from its position at the beginning of said interval ineach cycle for a distance corresponding with said interval, said powersupply source furnishing power to said motor concurrently with theoperation or said movable means.

19. A telemetric receiver comprising an electric motor operable atsubstantially constant speed from an electrical supply source, meansmovable by said motor, and'means responsive to current modificationsfrom another electrical supply source for causing operation of thefirstmentioned means by said motor for a distance corresponding to thetime duration between said 3 current modifications.

20. In a telemetric receiver cyclically respon- I KURT wmnn.

Disclaimer 1,985,130J-Kurt W'ihie, Berlin-Wilmersdorf, German TELEMETBIGRncmvm'n. Patent dated Dec. 18, 1934. Disclaimer filed Ju y 19, 1949, bythe assignee,

Builders Iron Foundry.

Hereby enters disclaimer to claims 5 to inclusive, and claims 17, 18,19,-

and of said patent.

{Ofiicial Gazette Aug. 28, 1949.]

